diff --git a/2020/.gitignore b/2020/.gitignore
index 2c96eb1..020748f 100644
--- a/2020/.gitignore
+++ b/2020/.gitignore
@@ -1,2 +1,5 @@
 target/
 Cargo.lock
+flamegraph.svg
+perf.data
+perf.data.old
diff --git a/2020/Cargo.toml b/2020/Cargo.toml
index 070368c..12a0f3d 100644
--- a/2020/Cargo.toml
+++ b/2020/Cargo.toml
@@ -8,3 +8,6 @@ edition = "2018"
 clap = "3.0.0-beta.2"
 lazy_static = "*"  # Pinned by regex
 regex = "1"
+
+[profile.release]
+debug = true